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Study of Water, Methanol And Isopropanol Adsorption on The Surface of Titanosilicas of Different Structure

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Abstract

The adsorption of water, methyl and i-propyl alcohol vapours has been studied on the surface of titanosilicas produced by various methods, as well as on the surface of pure silicon and titanium oxides. Based on findings of the studies, it was concluded that the presence on the surface of pyrogenic titanosilicas (TAS) of hydrolytically unstable Si-O-Ti bonds is responsible for their increased adsorption activity towards water molecules. A dissociative adsorption of H2O on titanosiloxane bridges is accompanied by an appearance of additional groups ≡SiOH and ≡TiOH, which, in turn, become sites of adsorption of subsequent water molecules.

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Authors and Affiliations

  1. Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Prospekt Nauki 31, 03039, Kyiv, Ukraine

    E. M. Pakhlov, E. F. Voronin, M. V. Borysenko & G. R. Yurchenko

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  1. E. M. Pakhlov
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  2. E. F. Voronin
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  3. M. V. Borysenko
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  4. G. R. Yurchenko
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Pakhlov, E.M., Voronin, E.F., Borysenko, M.V. et al. Study of Water, Methanol And Isopropanol Adsorption on The Surface of Titanosilicas of Different Structure. Journal of Thermal Analysis and Calorimetry 62, 395–399 (2000). https://doi.org/10.1023/A:1010173710831

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  • DOI: https://doi.org/10.1023/A:1010173710831

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